It was more than two years ago A/NES, the Nintendo 8-bit emulator for classic AmigaOS, was declared dead.
But now it has risen from it's grave, and it's back, with a new beta-release v1.17beta1.
Some of it's fixes are:
* Palette bugfixes
* Minor graphicsoptimizations
* Implementation of NTSC/PAL screenmodes
+ some other misc stuff
Check out the website